Canon

Comics

Katherine Kane first appeared in Detective Comics #233 (July 1956). After a long hiatus, she was reintroduced to DC continuity in the 52 Universe in 52 #7 (June 2006).

Unlike the Silver Age Kathy Kane, who was romantically attracted to Batman, the new version of Kate Kane is a lesbian. Her first romantic relationship is with Renee Montoya and later she's romantically involved with Maggie Sawyer.

DC Bombshells

In 1940, while the allied forces fight overseas in World War II, Kate takes on the identity of The Batwoman. Together, with her team of Batgirls, the group protects America from criminality. But her actions capture the attention of Amanda Waller. Waller recruits Batwoman for her Bombshells Team.

Other Adaptions

Although Batwoman has been named several times throughout DCAU and other Batman related animated series, it is not until Batman: Bad Blood that the Katherine Kane version was first seen. It also canonizedLGBT sexual orientation, as well as her romantic relationship with Renee Montoya.